<!doctype html>
<html>
<head>
    <meta charset="UTF-8">
    <title>计算机</title>
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
</head>
<body>

<p>整数1: <input type="text" id="ol1"></p>
<p>整数2: <input type="text" id="ol2"></p>
<p>
    <button onclick="up(1)">相加</button>
    <button onclick="up(2)">相减</button>
    <button onclick="up(3)">相乘</button>
    <button onclick="up(4)">相除</button>
</p>

<p>结果: <input type="text" id="pl"></p>

<script src="./js/script.js"></script>
</body>
</html>